Machine for picking up and collecting stones



Sept. 22. 1925; 1,554,376

V J. SCHR AG IACHiNE FOR PIGKING UP AND OLLECTING STONES Filed Jan". 8;1925 3 Sheets-Sheet 1 INVENTOR. J52, Scrg 'ATT EY.

Sept. 22, 1925. 113554376 J. SCHRAG MACHINE Fm PICKING. UP ANDCOLLECTING STONES Filed Jan. 8. 1925 3 Sheets-Sheet 2 I mwsurom J9 Co Agifiray Sept. '22, I925. 1,554,376

. J. SCHRAG- MACHINE ron PICKING m ANDI COLLECTING sronss 7 Filed Jan:8, 1935 -s Sheets-:Sheat -:s

v Guiana Patentedsept. 22, 1925. I 3

UNITED STATES JACOBSCHRAG, OF ROCHESTER, NEW YORK.

MACHINE FO'R PICKING UP AND COLLECTING STONES.

Application filed January 8, 1925. Serial No. 1,165.

To all whom it may concern:

Be it known that I, JAooB SGHRAG, a 0151' zen of the Republic ofSwitzerland, residing at Rochester, in the county of Monroe and State ofNew York, have invented certain new and useful Improvements in MachinesforIicking up and Collecting Stones, of which the following is aspecification.

The object ofthis invention is to'provide a new and improved machine forpicking up stones from a plowed field, so that the stones can be removedfrom the ground. Another object is to separate stones from dirt andreturn the dirt to the ground.

These and other objects of the invention will'be illustrated in thedrawings, described in the Specification and pointed out in the claimsat the end thereof.

:In the drawings Figure 1 is a side elevation of my improved machine.

Figure 2 is a section on the line 2?, 2 of Fig. 1.

Figure 3 is a section on the line 3*, 3 of Fig. 2.

Figure 4 is a rear elevation of the machine. I

Figure 5 is a top plan of the front portion of themachine.

Figure 6 is a front elevationof the front of the machine.

In the drawings like reference numerals indicate like parts.

In tliedrawings reference numeral 1 indicates the frame of the machinemade up of beams 2 and 3 whichv are connected together by the yoke 4. atthe front and are fastened to the box 5 at the rear. At the front of themachine is provided the axle 5 on which are swiveled the spindles 6 and7 which in.

turn are supported by the wheels 8 and 9. n the axle 5 is provided the.four guide rods 10, 10 and 11, 11 each of which have a reduced endv atthe bottom whichpass through suitable openings in the axle 5. Theseguides 10 and 11 are arranged in pairs as shown in Figure 5. Each guidehas a shoulder which rests upon a plate 12 which in turn rests upon theaxle 5. A similar plate or washer13 is shown below the axle. The lowerends of the guide rods are riveted up as indicated at 14 by which theyare firmly held in place.

The beams 2 and 3 are provided with guide sleeves at the forward endwhich engage with two of the guide rods 10 and 11 so that they can moveup and down thereon.

Itwill be understood that while a pair of rods 10 and 11, llare providedon'each side, the beams engage with only one rod of each pair. make thestructure more rigid. On top of the rods 10 and 11 is provided a bridge15. On the forward end of the yoke: 4 is provided a hanger 16 with whichengages the screw 17, which extends up to the bridge 15. A

hand wheel 18 engages with this screw and is threaded thereon and restson the bridge 15. As the hand wheel isturned the forward ends of thebeams are raised or lowered so as to hold them at. a suitable distanceAt the rear end the above the ground. beams are attached to the box'5which box is provided to receive the stones thatare picked up off of theground and carry them ofi the field. .The beams are supported by The twoextra rods are used to an axle 20 which in turn is supported by thewheels 21 and 22, which rest on the ground.

The axle 20 passes through the box 5 from one vwheel to the other. Oneach of the wheels 21 and 22 are carried sprocket wheels 23 and 24. Thesprocket wheel 23 drives the chain 25, which in turn drives the sprocketwheel 26 carried on the shaft27. The shaft 27 rotates in a bearing whichis supported on the cleat 28 which cleat in turn is supported by theangular bracket'29' and 30. The sprocket wheel 26 and shaft 27 drives apinion 31 that in turn drives a pinion 32 carried on a shaft 33. Thisshaft. carries sprocket wheels 3% and 35 which in turn drives the chains36 of an endless conveyor which at its lower end passes over a similarsprocket wheel supported on a shaft 37. which shaft rotates in bearingssupported by the triangular bracket 38. The endless conveyor of whichthe chains. 36 form a part travels between guides 39. At suitableintervals these chains are connected by cross bars 40, which bars travelover slats ll which form the bottom of the runway of which the guides 39form a part. The chains and cross bars comprise an endless conveyor.

The sprocket wheel 2% drives a chain 12 which in turn drives thesprocket wheel 43 carried on the shaft i l mounted to rotate in suitablebearings 15 carried on the triangular bracket 29 and 30. This shaft isprovided with sprocket wheels 16 and 47 shaft 50. is supported betweenthe bearings 51 which are attached to the under side of the beams 2-and8. The chains 48 have attached thereto at suitable intervals triangularplates 52 which plates form a part of the chain. On the point of theseplates is pivoted the swinging arms which arms support blades 5% on thebottom thereof that are substantially as wide as the conveyor 40. Tothese arms are attached links which pass up through the double links ofthe-chains 48. The upper ends of these links are upset so as topositively engage over the links of the chains and by them the downwardmovement of the links 55 is limited so that the arm 53 can swing do tothe position shown in Figure 3 and on the lower side of the conveyor asshown in Fig. 1, but cannot swing below that position and is, alwaysfree to swing above this position as is shown in the upper run of theconveyor 4:8 in Figure 1. This swinging, arrangement permits the bladesto yield iffthey should dropv on top. of a rock so that jamming isavoided, but enables the blade to take hold of the rocks whenever theydrop down behind the rocks. There will be some tendency of rocks-to rolldown the conveyor 36, 0 and such movement of the rocks will be arrestedby the blades 54. It will also be understood that the gearing thatdrivesthe conveyor 36, lO will drive it at a velocity considerablyhigher than the velocity at which the blades 54 are carried up. This isapparent from an inspection of Figures 1 and 4. Figure 45 shows that thesprocket wheel 23 is of large diameter and the sprocket wheel 26 is ofsmall diameter and this in turn drives a large pinion 31 which drives asmall pinion 32 which in turn drives the lower conveyor. This gives thelower conveyor a high velocity. Figure at shows that sprocket wheel 2-lis of small diameter and this in turn drives sprocket Wheel at?) whichis of larger diameter than sprocket wheel 26 and this sprocket wheel 43directly drives the shaft 414: that drives the upper conveyor. Thisgives the upper conveyor a low velocity.

As shown in Figure 1 a bracket is provided on the under side of each ofthe beams 2 and A bracket 61 is also provided and from these brackets issupported a rake 62 two of which rakes are provided as is shown inFigure 5. These rakes liare out forwardly so that they cover a widthseveral times aswide as the conveyor and by these rakesstones aredeflected inwardly into line with the conveyor so that all stones caughtthereby will be landed on a shoe 6?) as shown in Figure 5. Whateverstones land on the shoe will be caught by the blade and will be carriedup thereby and thrown on the lower conveyor, which carries them forwardat a high rate of speed and will separate the dirt from the stones, thedirt falling through between the cross bars oi the conveyor and betweenthe slats ll, *ll while the stones are carried upward and are dumpedinto the box 5.

I claim:

1. In a machine for picking up stones, the combination of a frame, apair of endless inclined conveyors mounted 011 said frame, the upperconveyor being longer at the lower end than the lower conveyor, astationary shoe at the lower end of the lower conveyor adapted to pickup stones and place them on the upper side of the lower conveyor, theupper conveyor running in the reverse direction at a lower speed thanthe lower conveyor and having blades thereon that cooperate with thelower conveyor and move in the same direction with the upper sideof thelower conveyor to raise stones and separate them from dirt and dischargestones into a receptacle, said blades being mounted to swing on saidupper conveyor and means carried by said blades to hold said blades at apredetermined angular position with relation to said conveyors to allowthe stones to pass under said blades and scrape the surface of them.

2. In a machine. for picking up stones, the combination of a shoe forpicking up stones, an endless conveyor on which said shoe is adapted todischarge stones, said conveyor running rearwardly and upwardly, anupper conveyor mounted parallel with the lower. conveyor, the under sideof the upper conveyor running in the same direction as the lowerconveyor, and at a much lower speed than the lower conveyor, bladesmounted to swing on the upper conveyor and cooperate with they lowerconveyor to carry stones up thereon an arm carried by each of saidblades said arm extending from the blades to said upper conveyor andmeans provided on said arm to hold said blades against movement in onedirection but allow the blades to swing in the opposite directionagainst the under side or said upper conveyor.

In testimony whereof I atlix my signature.

JACOB SCI-IRAG.

